Why do we feel nausea while travelling?

When travelling by car, bus or boat or when riding a giant wheel, some of us experience nausea, dizziness, vomiting and cold sweats. This is called motion sickness. Why do we experience this?

Scientists do not know for sure. But a popular and widely accepted theory is that it is due to the incongruous information our brain receives from the sensory organs.

Did you know it is your inner ears that help control your sense of balance? Ears are part of a network called the vestibular system, which detects gravity and movement. The inner ear structures tell your brain whether you’re standing up, lying down or moving. The system helps you keep your balance.

Signals from this system are supplemented with inputs from your other senses. But when these inputs are contradictory, you may experience sickness.

For example, when you’re in a moving car, your eyes see the scenery passing by through the window, which inform your brain that your body would feel that it is not moving.

 

Picture Credit : Google